Optical sheet and backlight unit using the same
AssigneeLG Display Co., Ltd.
InventorsJae-Bum Kim, Sun-Hwa Lee
Life of this patent
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Abstract
Disclosed are an optical sheet, which includes a prism pattern having condensing axes crossing each other in diagonal directions with respect to an arrangement direction of light sources, thereby achieving an enhanced contrast ratio without a reduction in viewing angle and an increase in costs, and a backlight unit using the same. The optical sheet includes a plurality of crossed prism patterns each having a first condensing axis and a second condensing axis crossing each other in diagonal directions with respect to an arrangement direction of a light source.
Claims10
An optical sheet comprising a plurality of crossed prism patterns each having a first condensing axis and a second condensing axis crossing each other in diagonal directions, with respect to an arrangement direction of a light source.
A backlight unit comprising:
- a plurality of light sources arranged in a given direction;
- an optical sheet located above the light sources and including a plurality of crossed prism patterns each having a first condensing axis and a second condensing axis crossing each other in diagonal directions with respect to the arrangement direction of the light sources;
- and
- a case structure configured to surround the light sources.
Dependencies are inferred from the claim text.